Pilko isn't similar to the word in any other language I know. What is its origin?
2 Answers
According to Wiktionary it comes from the Polish piłka (pronounced [ˈpiwkä]), where it also means ‘ball’.
It's from Polish piłka and Yiddish pilke - probably chosen over the alternatives to avoid collision with the word balo.
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The Polish word stems from Latin pila, which can be seen as an additional source for pilko. Commented Apr 4, 2018 at 8:47